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Asked by jhajuhi19 | 15 May, 2019, 02:09: AM
Expert Answer
Human skin color is a good example of polygenic (multiple gene) inheritance.
Three "dominant" capital letter genes (A, B and C) control dark pigmentation while three "recessive"alleles of these three genes (a, b & c) control light pigmentation.
Mulatto man – AABbcc, gametes produced- ABc, Abc
White lady- aabbcc, gametes produced- abc
Cross between the mulatto man and white lady:
|
|
ABc |
Abc |
|
abc |
AaBbcc |
Aabbcc |
Thus, 2 genotypes and 2 phenotypes are produced in this case.
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